NRF24LE1 in Register retention, timers on. Inrush current when waking up.

RE: NRF24LE1 in Register retention, timers on. Inrush current when waking up.

ovrebekk — Wed, 31 Jul 2019 13:13:37 GMT

Hi Igor

Good to hear you found a solution. In general some decoupling on your supply is always a good idea, especially if you plan to run from battery 🙂

Best regards
Torbjørn

RE: NRF24LE1 in Register retention, timers on. Inrush current when waking up.

r_nin — Tue, 30 Jul 2019 19:59:40 GMT

Hi Torbjørn

Bit 7 in the CLKCTRL i have connected from the beginning.I connected the capacity of 22 uF to power the microcircuit. There are no more needles. Thank you for your attention to my problem. We will assume that it is solved.

RE: NRF24LE1 in Register retention, timers on. Inrush current when waking up.

ovrebekk — Tue, 30 Jul 2019 07:25:30 GMT

Hi Igor

The spike you are seeing might be caused by the startup of the external 16MHz oscillator (XOSC), which could occur after wakeup from register retention (PWRDWN = 4).

Could you try to set bit 7 in the CLKCTRL register before going to sleep?

Then the XOSC should be enabled in sleep, and the spike should not be there (just be aware that this will increase the current consumption during sleep).

Best regards
Torbjørn

RE: NRF24LE1 in Register retention, timers on. Inrush current when waking up.

r_nin — Sat, 27 Jul 2019 10:39:14 GMT

Sorry? No Deep Sleep - StandBy, of course...